Coal face end suspended roof treatment device

Abstract

The invention discloses a coal face end suspended roof treatment device. The device weakens a suspended roof in a fracturing mode, in the fracturing process, a special worker does not need to go to the site personally, the treatment device can be automatically placed at the position to be treated of a coal face end suspended roof through a traveling device, then automatic drilling is conducted, afracturing drill pipe automatically extends into a fracturing drill hole, fracturing after automatic plugging is achieved, weakening treatment of a suspended roof top plate is achieved, the safety ofthe coal face is improved, and the problems of gas, fire disasters and the like are prevented. According to the device, a sealing and plugging mechanism is arranged, sealing and plugging can be conducted between the pressure drill pipe and the end face of the drill hole, so that a high-pressure fracturing mechanism is used for fracturing the suspended roof, meanwhile, plugging of the plugging mechanism is simple and convenient, automatic reaming can be achieved, and jacking and plugging are achieved.

Description

technical field [0001] Specifically, the invention relates to a ceiling suspension treatment device at the end of a coal mining face, and relates to the related field of ceiling suspension treatment. Background technique [0002] At present, in the coal mining face, generally speaking, the ends of the two ends are leaning against the coal pillars, so the suspended roof is relatively large. Fire prevention and other angles are all within the scope of potential safety hazards. Therefore, it is generally necessary to control the maximum suspension distance of the end. However, it is often difficult to weaken the roof at the suspension because the roof at the suspension is relatively hard, so the maximum suspension distance is often large, and this kind of When the ceiling suspension distance is too large, because the hard roof is often sudden when danger occurs, it has a greater risk. Therefore, in order to control the excessive ceiling suspension distance of the end of the co...

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Problems solved by technology

[0002] At present, in the coal mining face, generally speaking, the ends of the two ends are leaning against the coal pillars, so the suspended roof is relatively large. Fire prevention and other angles belong to the scope of safety hazards

Therefore, it is generally necessary to control the maximum suspension distance of the end. However, it is often difficult to weaken the roof at the suspension because the roof at the suspension is relatively hard, so the maximum suspension distance is often large, and this kind of When the ceiling suspension distance is too large, because the hard roof is often sudden when danger occurs, it has a greater risk. Therefore, in order to control the excessive ceiling suspension distance of the end of the coal face, it is necessary to Weakening the suspended roof, that is, using fracturing to achieve weakening treatment, so as to shorten the distance of the suspended roof, ensure the release and removal of gas, and prevent accidents such as gas and fire

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